Upvote:-1
It might be Pelagius recognized that his teaching on salvation is at least in part of matter of human achievement and not all of grace alone is compatible with Antionchene Christology at that time. He did sought refuge with them. And the Antionchene Christians sympathized with him.
This is due to, in various forms, the Antiochene theologians overemphasize the two natures of Christ in a way that make his humanity a distinct individuality against his divine nature. In its extreme form, it hails back to Nestorian christology.
Upvote:3
Pelagianism isn't a Christology, and "the perfect humanity of Christ is united to the Logos" isn't a Nestorian position as stated. The argument linking the two was that Nestorianism is the Christology that naturally fits with Pelagian Anthropology and Soteriology. That's not something that any of the major Pelagians or Nestorian thinkers said, though; that was a link made by their enemies.
It wasn't Nestorian thinkers specifically, but the East generally that attracted the exiled Pelagians. The Synod of Diospolis, which exonerated Pelagius, wasn't a Nestorian synod. And though Julian of Aeclanum was an admirer of Theodore of Mopsuestia and settled in his bishopric and translated some of his stuff into Latin, Theodore plainly denied that it was possible to live a perfect life with only the goods of nature. The Assumed Man could do it only because the Word was so closely and permanently united to him. And Julian quoted many Eastern authorities against Augustine, most of whom had no Nestorian connection.
A distinctively Pelagian Christology would not only have to teach two persons in Christ, but would also have to be Adoptionist in order to give Jesus a chance to live perfectly on his own before the Word indwelt him; and as far as I know, neither Pelagius nor Caelestius nor Julian ever suggested such a thing. Nor did Theodore, nor Nestorius. You have to go back to Paul of Samosata (who was universally condemned well before the 5th century) to try to pin that one on Antioch.